US7405095B2 - Method for producing color-wheel segments - Google Patents
Method for producing color-wheel segments Download PDFInfo
- Publication number
- US7405095B2 US7405095B2 US11/037,437 US3743705A US7405095B2 US 7405095 B2 US7405095 B2 US 7405095B2 US 3743705 A US3743705 A US 3743705A US 7405095 B2 US7405095 B2 US 7405095B2
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- US
- United States
- Prior art keywords
- circular
- annular edge
- sections
- edge
- circular section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- This invention relates to color wheels for projection systems and to a method for producing color wheels.
- the invention pertains to a color wheel of the type employed in generating sequential color images using projection equipment.
- a color wheel can be produced by appropriately coating and configuring a disk-shaped glass substrate. It is especially the configuration process, however, that is expensive. In practice, therefore, a color wheel is in most cases composed of circular sections. It is typically produced by separating ring sectors or circular sections from dichroic plates and attaching them on a rotary disk in such fashion that the outer regions of the circular sections protrude past the rim of the disk and the outer edges of the circular sections form an annular circle.
- the color wheel thus produced when to be used, is positioned in the optical path of an illuminating beam which, depending on the optical characteristics of the circular section currently in the optical path, will be transmitted or reflected for instance as a function of the wavelength concerned. Rotating the wheel makes it possible to generate a sequence of different colors.
- This invention also relates to a method for producing the circular sections for use in a color wheel.
- a standard circular section 3 is circumscribed by an outer annular edge 5 , an inner annular edge 7 as well as two radial edges 9 , 9 ′ that enclose the central angle ⁇ and extend in a direction perpendicular to the outer and inner annular edges 5 , 7 .
- the outer annular edge 5 is divided into a central circular arc section 11 and two lateral circular arc sections 13 and 13 ′ in such fashion that the chord to the central circular arc section 11 is of the same length as the chord to the inner annular edge 7 and that the two lateral circular arc sections 13 , 13 ′ are of an identical length.
- the surface of the plate material is first scored along the line of the intended edge and the glass is then broken along that line. There must be enough material on both sides of the scored line to permit the application of the force necessary for breaking it and making sure that the break actually follows the line of the intended edge. In that context, enough material means at least three times the thickness of the glass to be broken. If the glass is 1 mm thick, the circular arc sections must consequently be spaced at least 3 mm from the respectively neighboring circular arc section over its entire circumference, unless the circular sections share a common break line.
- a desirably modified circular section features an inner annular edge whose curvature matches the outer annular edge.
- the circular sections can be so positioned that the inner annular edge 7 of a circular section constitutes a common edge break line with the central section 11 of the outer annular edge 5 of another circular section.
- the circular sections will thus form columns in which they are positioned one above the other. This process is therefore referred to below as the columnar method.
- the problem is solved by modifying both the serpentine method and the columnar method in a manner as to make a combination possible starting with a placement along the columnar method, the first step is to alternate the orientation of the curvature of the circular sections in neighboring columns. That already makes it possible, in due consideration of the spacing needed for the separation, to move the columns closer together than in the original columnar method. The columns are thus interlaced to a degree. In a next step the columns are staggered in a way as to permit still closer interlacing. This should progress to a point where the radial edges of neighboring columns form common edge break lines, with the columns meshing tightly.
- a particularly advantageous implementation of this invention is practicable whenever the application permits a modification of the outer annular edge of the circular section. In that case it is possible to tightly interlace the columns and all of the modified circular sections can be positioned on the plate material with common break lines, eliminating any loss of material that would have to be removed.
- FIG. 1 is a diagrammatic illustration of a circular section
- FIG. 2 shows the placement of the circular sections on a plate material along the serpentine method
- FIG. 3 shows the placement of the circular sections along the columnar method
- FIG. 4 shows the placement of the circular sections in accordance with a first form of implementation of the invention
- FIG. 5 schematically depicts an example of how the edge break lines can be configured on a plate
- FIG. 6 illustrates the arrangement of circular sections where the outer annular edge is modified in a way as to eliminate loss of material
- FIG. 7 shows another configuration according to the invention, in which the length of the radial edges corresponds to that of the original circular segment
- FIG. 8 depicts another form of implementation
- FIG. 9 shows a configuration with all straight break line segments.
- the serpentine method and the columnar method can only be combined by means of the inventive step involving only a partial butting of the radial break lines. Essentially, this can be done in one of two ways: i) Juxtapositioning the radial break lines only to a point where a loss area is intentionally created just large enough to permit the separation (for instance by the S&B method).
- circular sections are to be obtained from a plate material 1 mm thick.
- the plate material in this example is a glass plate coated with a color filter for a color wheel.
- the circular sections to be produced have an outer annular edge with a 40 mm radius of curvature.
- the central angle is 90°.
- the radial edges have a length of 22 mm each.
- the application of the color wheel is such as to permit the curvature of the inner annular edge to be adapted to the curvature of the outer annular edge.
- circular sections are positioned in close juxtaposition along the columnar method, in which case the curvature of the circular sections of two neighboring columns is oriented in mutually opposite directions.
- the radial edges of the circular sections of neighboring columns are positioned next to one another in such fashion that actually only 15.5 mm of their overall length of 22 mm make contact. The remaining 6.5 mm of the radial edges do not bound on another circular section.
- FIG. 4 shows level by level the various separation steps. The bottom level represents the glass plate in the lower part of which the dotted line indicates a predefined breaking edge.
- the next level up shows another step of the separating phase in the form of a circular section that still includes a loss area.
- the break lines for additional circular sections on the same level are shown as a dotted outline only.
- One level up from there is a completely separated circular section with the loss area severed.
- the loss area is double-concave, its narrowest point being more than 3 mm wide, which is more than four times the thickness of the plate. That allows it to be easily and dependably separated from the circular section by the S&B method.
- FIG. 6 a shows a circular section with a modified outer annular edge.
- the dotted outline represents the original circular section.
- the area defined by a solid line constitutes the components that have been added compared to the original circular section.
- FIG. 6 b schematically depicts a wheel composed of such modified circular sections.
- FIG. 6 c illustrates at different levels on a glass plate the individual separating steps. First, a serpentine strip is broken out of the glass plate. Its as yet unbroken state is represented on the bottom-most level by a dotted line. The level above that depicts the broken-out strip.
- break lines along the radial edges are Illustrated on the top level.
- the break is shown as completed while for other circular sections the predefined edge break lines are merely indicated by dotted lines. There are no loss areas. Moreover, the absence of corners greatly facilitates the S&B process with a direct positive effect on the yield.
- this production method leads to an elongation of the radial edges.
- a color wheel composed of circular sections identical in area size that poses no problem. More commonly,. however, wheels are assembled from circular sections having different central angles.
- a color wheel used for projection purposes typically contains red, blue, green and fully transparent circular sections with central angles that differ as a function of the color density.
- modifying the circular sections in accordance with the invention will lead to different elongations of the radial edges, i.e. compared to the adjoining circular section they may possibly protrude in pointed fashion or they may be set back. Protrusions of that kind make the color wheel susceptible to mechanical stress.
- FIG. 7 a shows a circular section thus modified, selecting for this example a version whereby the inner annular edge actually still forms a circle when these circular sections are assembled into a color wheel as illustrated in FIG. 7 b .
- FIG. 7 c again shows at the various levels the individual separating steps.
- FIG. 7 may create the impression that it deviates rather strongly from the original wheel geometry after all. It should be pointed out, however, that this is only given as an example and that it is entirely possible to combine configurations per FIG. 6 and FIG. 7 to arrive at the same radial edge length for all circular sections without an excessive departure from the geometry of the wheel.
- FIG. 8 One such example is illustrated in FIG. 8 .
- the correspondingly modified circular section is shown in FIG. 8 a in which the areas that have been added to the original circular section are identified by a solid outline.
- FIG. 8 b is a schematic illustration of a color wheel composed of such circular sections
- FIG. 8 c shows the individual separating steps at the various levels.
- FIG. 9 illustrates a modified circular section
- FIG. 9 b a wheel composed of such circular sections
- FIG. 9 c shows the individual separating steps at the various levels.
- the outer contour of the wheel is of significance, albeit not optical in nature.
- the color wheel rotates at more than 80 Hz, typically about 120 Hz. Deviations from the circular contour can be expected to engender air turbulences which in turn can generate noise.
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Optical Filters (AREA)
Abstract
Description
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/037,437 US7405095B2 (en) | 2004-01-20 | 2005-01-18 | Method for producing color-wheel segments |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53772604P | 2004-01-20 | 2004-01-20 | |
US11/037,437 US7405095B2 (en) | 2004-01-20 | 2005-01-18 | Method for producing color-wheel segments |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050180036A1 US20050180036A1 (en) | 2005-08-18 |
US7405095B2 true US7405095B2 (en) | 2008-07-29 |
Family
ID=34794455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/037,437 Active 2025-06-05 US7405095B2 (en) | 2004-01-20 | 2005-01-18 | Method for producing color-wheel segments |
Country Status (7)
Country | Link |
---|---|
US (1) | US7405095B2 (en) |
EP (1) | EP1708969B1 (en) |
JP (1) | JP4805167B2 (en) |
KR (1) | KR101161457B1 (en) |
CN (1) | CN1910119B (en) |
TW (1) | TWI378312B (en) |
WO (1) | WO2005068382A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013056930A1 (en) * | 2011-10-21 | 2013-04-25 | Osram Gmbh | Phosphor wheel, method for producing a phosphor wheel and lighting arrangement |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4835901B2 (en) * | 2004-12-06 | 2011-12-14 | ミネベア株式会社 | Color wheel and manufacturing method thereof |
CA2597588C (en) | 2005-02-14 | 2011-05-24 | Viasat, Inc. | Iterative diversity reception |
TWI278655B (en) * | 2005-09-06 | 2007-04-11 | Premier Image Technology Corp | Cutting method for fabricating a color wheel |
CN100526031C (en) * | 2005-09-16 | 2009-08-12 | 鸿富锦精密工业(深圳)有限公司 | Color wheel lens cutting process and assembling process |
KR101046520B1 (en) | 2007-09-07 | 2011-07-04 | 어플라이드 머티어리얼스, 인코포레이티드 | Source gas flow path control in pecvd system to control a by-product film deposition on inside chamber |
CN105222001B (en) * | 2014-06-06 | 2018-07-20 | 台达电子工业股份有限公司 | The production method of light source module and colour wheel |
FR3024137B1 (en) * | 2014-07-24 | 2016-07-29 | Saint Gobain | METHOD FOR MANUFACTURING COMPLEX SHAPE GLASS SHEETS |
FR3024136B1 (en) * | 2014-07-24 | 2021-04-30 | Saint Gobain | PROCESS FOR BREAKING A SHEET OF GLASS |
Citations (26)
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GB647714A (en) | 1940-09-07 | 1950-12-20 | Columbia Broadcasting Syst Inc | Improvements in colour television |
US3038206A (en) * | 1959-12-21 | 1962-06-12 | Chrysler Corp | Method and apparatus for shaping banded plastic sheeting |
US3547336A (en) * | 1969-02-11 | 1970-12-15 | Reynolds Metals Co | Container means and blank for making same |
US3979566A (en) * | 1973-12-12 | 1976-09-07 | Erazm Alfred Willy | Electromagnetic transducer |
SU1159901A1 (en) | 1983-12-06 | 1985-06-07 | Всесоюзный научно-исследовательский институт технического и специального строительного стекла | Method of severing allowance from glass sheet along cut line |
DE3400843A1 (en) | 1983-10-29 | 1985-07-18 | VEGLA Vereinigte Glaswerke GmbH, 5100 Aachen | METHOD FOR MANUFACTURING AUTOMOTIVE GLASS DISC WITH STRIP-SHAPED FAIRING PROTECTION FILTERS BY VAPORIZING OR SPUTTERING, AND DEVICE FOR CARRYING OUT THE METHOD |
US5130174A (en) * | 1989-10-12 | 1992-07-14 | Monsanto Company | Shaped interlayer blank |
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IT1240961B (en) | 1990-06-26 | 1993-12-27 | Bottero Spa | Process for cutting a laminated glass sheet along predetermined lines |
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JPH0945119A (en) | 1995-08-02 | 1997-02-14 | Suzuki Glass Tec:Kk | Shade for desk lamp |
US5709920A (en) * | 1995-01-06 | 1998-01-20 | Etablissements Duret | Structure of seat covers which is capable of withstanding lacerations, and method for the manufacture thereof |
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US6264199B1 (en) * | 1998-07-20 | 2001-07-24 | Richard E. Schaedel | Folding puzzle/transformational toy with 24 linked tetrahedral elements |
DE10016628A1 (en) | 2000-04-04 | 2001-10-18 | Schott Glas | Process for the production of small thin glass panes and larger thin glass panes as a semi-finished product for this manufacture |
US6598977B1 (en) * | 2002-08-08 | 2003-07-29 | Progressive Optoelectronics Technology Co., Ltd. | Color wheel having a bonding apparatus |
US6679622B1 (en) * | 2002-01-02 | 2004-01-20 | Boto (Licenses) Limited | Fibre optic lighted artificial tree |
US6896376B2 (en) * | 2002-10-17 | 2005-05-24 | Prodisc Technology Inc. | Color wheel and motor for the same |
US20050285981A1 (en) * | 2004-06-16 | 2005-12-29 | Sze-Ke Wang | Combination structure of color wheel |
US20060132510A1 (en) * | 2004-12-17 | 2006-06-22 | Bell Cynthia S | Illumination modulation technique |
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US20070099531A1 (en) * | 2005-10-27 | 2007-05-03 | Efremova Nadezhda V | Foam fastening system that includes a surface modifier |
US20070108885A1 (en) * | 2005-11-14 | 2007-05-17 | Tatung Company | Planar field emission illumination module |
US20070229683A1 (en) * | 2006-04-04 | 2007-10-04 | Bookham Technologies Plc | Color wheels, assemblies and methods of producing them |
Family Cites Families (1)
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CH694477A5 (en) * | 1996-04-30 | 2005-01-31 | Unaxis Balzers Ag | Colour wheel having disc-shaped support for filter segments - with ring-shaped zone adhesively bonded to support |
-
2005
- 2005-01-17 EP EP05700312.1A patent/EP1708969B1/en active Active
- 2005-01-17 WO PCT/CH2005/000017 patent/WO2005068382A1/en not_active Application Discontinuation
- 2005-01-17 KR KR1020067012852A patent/KR101161457B1/en active IP Right Grant
- 2005-01-17 JP JP2006548066A patent/JP4805167B2/en active Active
- 2005-01-17 CN CN2005800027304A patent/CN1910119B/en active Active
- 2005-01-18 US US11/037,437 patent/US7405095B2/en active Active
- 2005-01-18 TW TW094101418A patent/TWI378312B/en active
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GB647714A (en) | 1940-09-07 | 1950-12-20 | Columbia Broadcasting Syst Inc | Improvements in colour television |
US3038206A (en) * | 1959-12-21 | 1962-06-12 | Chrysler Corp | Method and apparatus for shaping banded plastic sheeting |
US3547336A (en) * | 1969-02-11 | 1970-12-15 | Reynolds Metals Co | Container means and blank for making same |
US3979566A (en) * | 1973-12-12 | 1976-09-07 | Erazm Alfred Willy | Electromagnetic transducer |
US4562093A (en) * | 1983-10-29 | 1985-12-31 | Saint-Gobain Vitrage | Process for the production of glass panes having a glare protection filter and apparatus for carrying out the process |
DE3400843A1 (en) | 1983-10-29 | 1985-07-18 | VEGLA Vereinigte Glaswerke GmbH, 5100 Aachen | METHOD FOR MANUFACTURING AUTOMOTIVE GLASS DISC WITH STRIP-SHAPED FAIRING PROTECTION FILTERS BY VAPORIZING OR SPUTTERING, AND DEVICE FOR CARRYING OUT THE METHOD |
SU1159901A1 (en) | 1983-12-06 | 1985-06-07 | Всесоюзный научно-исследовательский институт технического и специального строительного стекла | Method of severing allowance from glass sheet along cut line |
US5130174A (en) * | 1989-10-12 | 1992-07-14 | Monsanto Company | Shaped interlayer blank |
IT1240961B (en) | 1990-06-26 | 1993-12-27 | Bottero Spa | Process for cutting a laminated glass sheet along predetermined lines |
US5238097A (en) * | 1991-10-17 | 1993-08-24 | Sanden Corp. | Serpentine-type merchandise storing and dispensing column for automatic vending machine |
US5229182A (en) * | 1992-01-02 | 1993-07-20 | Dopaco, Inc. | Cup construction |
US5371543A (en) * | 1993-03-03 | 1994-12-06 | Texas Instruments Incorporated | Monolithic color wheel |
US5709920A (en) * | 1995-01-06 | 1998-01-20 | Etablissements Duret | Structure of seat covers which is capable of withstanding lacerations, and method for the manufacture thereof |
JPH0945119A (en) | 1995-08-02 | 1997-02-14 | Suzuki Glass Tec:Kk | Shade for desk lamp |
US5826786A (en) * | 1996-03-06 | 1998-10-27 | Dickert; James | Cup holder sleeve in pre-assembled flat-folded form |
US6264199B1 (en) * | 1998-07-20 | 2001-07-24 | Richard E. Schaedel | Folding puzzle/transformational toy with 24 linked tetrahedral elements |
DE10016628A1 (en) | 2000-04-04 | 2001-10-18 | Schott Glas | Process for the production of small thin glass panes and larger thin glass panes as a semi-finished product for this manufacture |
US6253995B1 (en) * | 2000-05-16 | 2001-07-03 | Burrows Paper Corporation | Insulated containers and sidewalls having laterally extending flutes, and methods |
US20060191174A1 (en) * | 2001-12-21 | 2006-08-31 | Iml By Idesign | Label ledge for injection molded containers |
US6679622B1 (en) * | 2002-01-02 | 2004-01-20 | Boto (Licenses) Limited | Fibre optic lighted artificial tree |
US6598977B1 (en) * | 2002-08-08 | 2003-07-29 | Progressive Optoelectronics Technology Co., Ltd. | Color wheel having a bonding apparatus |
US6896376B2 (en) * | 2002-10-17 | 2005-05-24 | Prodisc Technology Inc. | Color wheel and motor for the same |
US20050285981A1 (en) * | 2004-06-16 | 2005-12-29 | Sze-Ke Wang | Combination structure of color wheel |
US20060132510A1 (en) * | 2004-12-17 | 2006-06-22 | Bell Cynthia S | Illumination modulation technique |
US20070099531A1 (en) * | 2005-10-27 | 2007-05-03 | Efremova Nadezhda V | Foam fastening system that includes a surface modifier |
US20070108885A1 (en) * | 2005-11-14 | 2007-05-17 | Tatung Company | Planar field emission illumination module |
US20070229683A1 (en) * | 2006-04-04 | 2007-10-04 | Bookham Technologies Plc | Color wheels, assemblies and methods of producing them |
Non-Patent Citations (1)
Title |
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Patent Abstracts of Japan, Bd. 1997, Nr. 06, Jul. 30, 1997 & JP 09 045119, Feb. 14, 1997. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013056930A1 (en) * | 2011-10-21 | 2013-04-25 | Osram Gmbh | Phosphor wheel, method for producing a phosphor wheel and lighting arrangement |
Also Published As
Publication number | Publication date |
---|---|
TW200530734A (en) | 2005-09-16 |
CN1910119B (en) | 2012-05-23 |
TWI378312B (en) | 2012-12-01 |
KR20060105035A (en) | 2006-10-09 |
JP4805167B2 (en) | 2011-11-02 |
US20050180036A1 (en) | 2005-08-18 |
JP2007519039A (en) | 2007-07-12 |
CN1910119A (en) | 2007-02-07 |
EP1708969A1 (en) | 2006-10-11 |
KR101161457B1 (en) | 2012-07-02 |
WO2005068382A1 (en) | 2005-07-28 |
EP1708969B1 (en) | 2018-10-03 |
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